import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        int a = 0;
        System.out.println(a);
    }
}

//      Scanner scanner = new Scanner(System.in);
//        while(scanner.hasNext()) {
//            int x = scanner.nextInt();
//            int y = scanner.nextInt();
//            int z = scanner.nextInt();
//            Sub sub = new Sub(x,y,z);
//            System.out.println(sub.calculate());
//        }
//  }
//}

  class Base {
    private int x;
    private int y;

    public Base(int x,int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }
}

class Sub extends Base {
    private int z;

    public Sub(int x,int y,int z) {
        super(x,y);
        this.z = z;
    }

    public int getZ() {
        return z;
    }

    public int calculate() {
        return super.getX() * super.getY() * this.getZ();
    }
}



